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Old 07-27-2016, 06:31 AM   #1
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which valve for which jack

I have a 2004 Itasca Meridian that uses HWH system and I am trying to figure out which solenoid valve is for which hydraulic jack, I found where there located but it is a hard area to get into and work. My problem is the drivers rear jack does not want to come up all the way on its own. I've already replaced the springs with New ones and still have same problem. Any help would be appreciated.
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Old 07-27-2016, 08:07 AM   #2
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You should have a manual way to release the jack, I have a 3 jack system. Each one has a small valve that you can turn. Raise your coach up a little and then release each of these one at a time until you get to the one you want.

Also, there have been other posts where the same thing was happening, jack wouldn't go up all the way. The culprit ended up being the nut on the end of the jack that holds the piston on, it had backed off and didn't let the jack fully retract.
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Old 07-27-2016, 11:30 AM   #3
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Quote:
Originally Posted by lowrider2 View Post
I have a 2004 Itasca Meridian that uses HWH system and I am trying to figure out which solenoid valve is for which hydraulic jack, I found where there located but it is a hard area to get into and work. My problem is the drivers rear jack does not want to come up all the way on its own. I've already replaced the springs with New ones and still have same problem. Any help would be appreciated.
lowrider2,
We have a sort of sister ship to yours. An '04 Itasca Horizon, 35GD with the C7 330HP CAT. Yep, no doubt about it, the HWH system, located under the steps, is quite congested in that area. I'll have to dig up my service manual and pdf files to see if I've got a diagram of the solenoid layout. There's an extremely nice gent on here that goes by the user name of "AZPete". He's the reigning authority of all the HWH systems and, operations.

If he chimes in here before I get back, he'll more than likely tell you right off the top of his head, which solenoid does what. I don't know if you've tried it or not but, you could do what I've done a couple of times. And that is, to spray those jacks with some WD-40 and or, use some ATF on them. I leave them just a tad wet and, wow, those jacks seam to sprint up. And, that method of help, seems to last for quite a while, maybe a year or so.

Then, while doing other maintenance, I do it again and, they're running up and down at peak speed again. Maybe worth a try if you haven't done it.
Scott
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Old 07-28-2016, 07:07 AM   #4
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thank you jim
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Old 07-28-2016, 07:16 AM   #5
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thank you for the info, I did locate hydraulic set up under step, and found manual release
on solenoids as well as a diagram and layout. also since jack went up manually its suggested that I check my check valve, and velocity valve
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